It is a pretty basic device, but the price point is great for the temperature range.
Importantly, it can calculate temperatures as high as 1600 C, which is handy for basic emissivity tests. I find that the software in most IR thermometers limits the upper temperatures reported to the maximum of their rating. (ie, the Optris software only calculates temperatures as high as 1507 C with the 1500 C camera option).
A device incapable of reporting as high as 1410 C of course will be of no use in testing (at least qualitatively) whether the correct emissivity user setting for a LWIR thermometer or camera when measuring a roughly 800 C alumina object is closer to, for example, 0.4 or to 0.95